Read Sony CDX-C760 / CDX-C760RDS Service Manual online
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SECTION 3
ELECTRICAL ADJUSTMENTS
Carrier frequency : 97.9 MHz (C760)
: 98.00 MHz (C760RDS)
Output level
: 22 dB (12.6 µV)
Mode
: mono
Modulation
: 1 kHz, 22.5 kHz deviation (30%)
Procedure :
1. Set to the test mode.
2. Push the SOURCE button and set to FM.
1. Set to the test mode.
2. Push the SOURCE button and set to FM.
Display
FM Auto Scan/Stop Level Adjustment
Setting :
SOURCE button : FM
3. Push the preset 3 button.
Display
4. Adjust with the volume RV2 on TU1 so that the “FM”
indication turns to “FM0” indication on the display window.
But, in case of already indicated “FM0”, turn the RV2 so that put
out light “0” indication and adjustment.
But, in case of already indicated “FM0”, turn the RV2 so that put
out light “0” indication and adjustment.
Display
FM RF signal
generator
0.01 µF
antenna
terminal
terminal
set
CD SECTION
CD section adjustments are done automatically in this set.
TUNER SECTION
Cautions during repair
When the tuner unit is defective, replace it by a new one because
its internal block is difficult to repair.
its internal block is difficult to repair.
0 dB = 1 µV
TEST MODE
This set have the test mode function. In the test mode, FM Auto Scan/
Stop Level and AM (MW) Auto Scan/Stop Level adjustments can be
performed easier than it in ordinary procedure.
Stop Level and AM (MW) Auto Scan/Stop Level adjustments can be
performed easier than it in ordinary procedure.
<Set the Test Mode>
1. Set the “OFF” mode.
2. Push the preset 4 button.
3. Push the preset 5 button.
4. Press the preset 1 button for more than two seconds.
5. Then the display indicates all lights, the test mode is set.
1. Set the “OFF” mode.
2. Push the preset 4 button.
3. Push the preset 5 button.
4. Press the preset 1 button for more than two seconds.
5. Then the display indicates all lights, the test mode is set.
<Release the Test Mode>
1. Push the OFF button.
1. Push the OFF button.
Note on Adjustment
The adjustments of tuner section, should be performed according to
the following sequence.
1. FM Auto Scan/Stop Level Adjustment
2. FM Stereo Separation Adjustment
3. FM RDS S-Meter Adjustment (CDX-C760RDS only)
4. AM (MW) Auto Scan/Stop Level Adjustment
the following sequence.
1. FM Auto Scan/Stop Level Adjustment
2. FM Stereo Separation Adjustment
3. FM RDS S-Meter Adjustment (CDX-C760RDS only)
4. AM (MW) Auto Scan/Stop Level Adjustment
REG
SHUF1
REG
SHUF1
*1 : “REG” is displayed only for CDX-C760RDS.
*2 : CDX-C760RDS has the “98.00” displayed.
*2 : CDX-C760RDS has the “98.00” displayed.
Adjustment Location : See page 26.
REG
SHUF1
*
1
*
2
*
1
*
2
*
1
*
2
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